3 edition of Weed control in established alfalfa found in the catalog.
Weed control in established alfalfa
D. F. Mayer
by Cooperative Extension, College of Agriculture & Home Economics, Washington State University in Pullman, [Wash.]
Written in English
|Series||Extension bulletin -- 0941., Extension bulletin (Washington State University. Cooperative Extension) -- 941.|
|Contributions||Washington State University. Cooperative Extension.|
|The Physical Object|
|Pagination||5,  p. ;|
Sethoxydim (Trade name Poast) may be used to control grass weeds. Weed Control in Established Alfalfa. Once a healthy, well managed alfalfa stand is established, weed problems should be minimized. However, this ideal is not always achieved and may not last for the entire lifetime of the stand. Has label clearance for control of barnyardgrass, crabgrass, and foxtail in established alfalfa where TREFLAN TR can be activated by rainfall/overhead sprinkler irrigation or mechanical incorporation. Some control of summer weeds has been reported, but getting uniform application with available equipment is a problem.
5 Introduction Alfalfa seed is an important niche crop on irrigated land in Southern Alberta. It can be a profitable crop to grow, but presents a number of challenges, one of which is the control of kochia (Kochia scoparia), which is not effectively controlled with herbicides currently registered for use on seed alfalfa. stand is essential for longterm weed control. In older alfalfa fields, weeds are quick to fill in open spaces when stands decline. It is nearly impossible to control weeds in a thin or weak alfalfa stand. Weeds affect alfalfa during two distinct periods: stand estab lishment and in .
in late summer or early fall. However, weed control in New Mexico and the Southern High Plains is generally much easier to achieve in late summer- to fall-planted al-falfa than in alfalfa planted in the spring. In established alfalfa stands, weeds not only compete. . weed control practice that can successfully provide long-term weed control in established alfalfa. Simply put, there are too many weed species that can occupy an alfalfa stand, and their highly variable life cycles and survival strategies guarantee that some will establish, particularly as old plants die-off. Using multiple approaches to weed.
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Treatment in established alfalfa Rates: 2 to 8 pt/A Timing: After last cutting in fall until 6 inches of alfalfa regrowth in spring Provides preemergence control of certain annual grass and broadleaf weeds. Do not apply less than 50 days prior to alfalfa harvest.
Not labeled for use in alfalfa establishment. Pursuit may be used on established alfalfa-grass mixtures. Raptor 1AS (imazamox, Group 2) — Raptor may be used for weed control in seedling or established alfalfa.
Apply Raptor at 4 to 6 fl oz/A plus adjuvants to small, actively growing weeds and to established alfalfa in the fall or in the spring. May 11, · Pursuit may be used on established alfalfa-grass mixtures. Raptor 1AS (imazamox) — Raptor may be used for weed control in seedling or established alfalfa.
Apply Raptor at 4 to 6 fl oz/A plus adjuvants to small, actively growing weeds and to established alfalfa in the fall or in the texasbestchambers.com: Artio. dormant established alfalfa for control of annual grasses and/or broadleaf weeds.
Examples include Karmex, Kerb, Prowl, Sencor, Treflan, Velpar and Zorial. Weed control in established alfalfa book Some can be helpful in managing certain perennial weeds.
Cultural practices in established alfalfa can influence weed populations. For example, research has shown that. A good stand of vigorously growing alfalfa competes effectively with field bindweed, especially when coupled with the frequent mowing that occurs in an established alfalfa field.
In Roundup Ready alfalfa, glyphosate (Roundup) provides effective control. Bermudagrass. Bermudagrass is a troublesome perennial weed that may crowd out alfalfa stands. Apr 21, · Postemergence Weed Control in Alfalfa April 21, Bruce Anderson - Extension Forage Specialist.
Share Tweet Email. Are you finding weeds in your new alfalfa. Vigorous weed growth this spring may make it extra tough for your seedlings as weeds reduce growth of new alfalfa by shading and competing for moisture.
Established ping rotation, mowing, and fire are alternative weed control methods that may be used alone or in combination. Available time, labor, equipment, and other costs as well as types of weeds and areas in-fested need to be considered when planning a weed control program.
To increase efficiency of crop production, use weed control. Weed Photo Gallery, with common and scientific names in established alfalfa (Reviewed 3/17, updated 3/17).
control in established alfalfa stands. Select® is generally better for control of perennial grasses, while all three products provide acceptable control of annual grasses. Annual weed management. Most herbicides for controlling summer annual weeds in established alfalfa stands are labeled for dormant or post-harvest applications only.
However, weed control in New Mexico and the Southern High Plains is generally much easier to achieve in late summer- to fall-planted alfalfa than in alfalfa planted in the spring.
In established alfalfa stands, weeds not only compete for resources but also reduce the quality of the forage. Apr 02, · Raptor 1AS (imazamox, Group 2) — Raptor may be used for weed control in seedling or established texasbestchambers.com Raptor at 4 to 6 fl oz/A plus adjuvants to small, actively growing weeds and to established alfalfa in the fall or in the spring.
Aug 22, · Prior to Planting. Weed management should begin the year before seeding alfalfa to help ensure a long-lasting and productive stand. It is particularly important to control perennial weeds prior to seeding because they can be more difficult to manage in an established stand. Weed Control in Alfalfa and Cooperative Extension Service SW = Apply ONLY as a Spot Spray or Wiper Application on non RR-alfalfa and other forage legume crops.
8 Apply to established alfalfa with a maximum of 6 inches or less of growth; must be applied before weeds emerge. Weed Control in Established Alfalfa (Medicago sativa L.) with Postemergence Herbicides 1 MARÍA C. ARREGUI 2, DANIEL SÁNCHEZ, and ROBERTO SCOTTA Abstract: Field. Effect of autotoxicity on alfalfa stands when alfalfa is seeded (a) immediately following alfalfa plowdown, (b) 4 weeks later, and (c) after 1 year.
b c a 0 weeks 2 weeks 4 weeks fall-killed after corn number of plants/ft 2 0 10 20 30 40 50 0 weeks 2 weeks 4 weeks fall-killed after corn yield (% of check variety) 0 20 40 60 80 plowed no-till. The best way to control grasses is to keep your alfalfa thick and thrifty so it will compete aggressively with invading grasses.
Thick initial stands and good soil fertility are needed. In addition, harvest alfalfa only after it begins to bloom or when new shoots appear at the base of the plants. eed management in alfalfa involves two distinct phases: weed control during seed-ling establishment and weed control in established stands.
Seedling establishment is the most criti-cal time to control weeds in alfalfa. Infestations during alfalfa establishment increase weed seed reserves in the soil and reduce alfalfa vigor and density. stand is essential for long-term weed control. In older alfalfa fields, weeds are quick to fill in open spaces when stands decline.
It is nearly impossible to control weeds in a thin or weak alfalfa stand. Weeds affect alfalfa during two distinct periods: stand estab-lishment and in. For maximum weed control, cultivate (where possible) 7 to 10 days following a lb imazamox ae/acre) to seedling or established alfalfa grown for forage, hay, or seed.
At the specified application rate, 1 gallon of Raptor will treat 21 to 32 acres. Seedling Alfalfa. WEED CONTROL IN ESTABLISHED ALFALFA -A YEAR-ROUND SYSTEM Wj 11 jam texasbestchambers.comlan and Vincent Schweers - Tulare County Farm Advisors"' J Two herbicides, diuron ([email protected]) and EPTC ([email protected]) are widely used in the San Joaquin.
Glyphosate (Roundup PowerMax, Durango DMA, Touchdown Total, etc.) provides a means of controlling quackgrass before forage establishment.
Because spring seedings should be made before quackgrass reaches the four- to five-leaf stage, the recommended stage of development for treatment with glyphosate, fall applications are encouraged to control quackgrass and other perennial grasses before.Nov 14, · One of the major challenges for alfalfa producers is a successful weed control using conventional herbicides.
The most critical time for weed management in alfalfa is during establishment. Weed infestation and competition during establishment will reduce seedling vigor and affect persistence and longevity of the perennial texasbestchambers.com: Rocky Lemus.Unlike corn and soybean production, chemical weed control in alfalfa is limited to just a handful of products, most of which can be applied only to established alfalfa after it goes dormant in the winter.
These herbicides are effective weed killers, but injures the alfalfa if the forage is not completely dormant.